title: Safety in numbers.
authors.forename: J N
authors.initials: JN
authors.lastname: Lunn
mesh_terms: D000758:Anesthesia / Q000401:mortality*; D006801:Humans; D009656:North America; D010043:Outcome and Process Assessment, Health Care / Q000379:methods*; D012107:Research Design; D013514:Surgical Procedures, Operative / Q000401:mortality*; D006113:United Kingdom